The Navimow i110N beats the i105N because battery headroom is never wasted.

Segway Navimow i110N

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Segway Navimow i105N Robot Lawn

The Segway Navimow i110N and i105N are not two generations of mower or two different approaches to automation. They are essentially the same wire-free maintenance mower with different working clocks. Both use RTK positioning assisted by a camera, follow virtual boundaries, mow in orderly lanes, manage multiple zones and cut with the same narrow hardware. Neither gains all-wheel drive, better clearance or freedom from the satellite antenna.

The i110N’s larger battery is the difference that matters. Its nominal mowing time is 120 minutes rather than the i105N’s 60 minutes, and its rated lawn capacity rises from one-eighth acre to one-quarter acre. The larger model does not cut faster or leave a more polished stripe. It simply stays on the grass longer before an automatic trip to the charger interrupts the job.

That sounds like a modest upgrade until the lawn contains trees, obstacles, separate zones or a few difficult turns. Every detour consumes time without cutting much grass. So does travelling through a channel, reversing away from an object, crossing the yard to dock and returning to the unfinished row. The i105N can recharge and resume, but its shorter sessions leave less margin for all the work that the acreage figure does not describe.

Neither mower is a rescue machine for an overgrown lawn. Start with grass already cut to the intended height, then schedule frequent passes that remove only a small amount. By the sixth week, a compatible lawn can look permanently maintained while the owner’s part shrinks to clearing debris, cleaning the mower and trimming the strips beside walls and raised borders.

Segway Navimow i110N

Segway Navimow i105N Robot Lawn

At a Glance

The upgrade is a battery, not a better robot

Acreage ratings describe the amount of maintained grass a mower is intended to manage, not what it clears on one charge. The i110N may still need several mowing and charging sessions near its quarter-acre limit, while the i105N can require more than one session on a divided or demanding small lawn. Our guide to what robot mower acreage ratings really mean explains why measured grass, obstacles and available mowing hours matter more than the property’s lot size.

The larger pack earns its keep even below a quarter acre. A 5,000-square-foot lawn sits inside the i105N’s nominal envelope, but it leaves little room for slow thick turf, repeated obstacle avoidance or days lost to wet weather. The i110N can complete more of that lawn in each dry window and spends a smaller share of its working day travelling to and from the dock.

Both inherit the same difficult-yard problem

The i110N’s battery does nothing for traction. Both mowers have a light, non-AWD chassis that is happiest on firm, substantially level turf. Shallow ruts, exposed roots, thick grass, damp inclines and abrupt transitions can leave either machine spinning, reversing or waiting for rescue. Optional rough-terrain wheels may help ordinary slippage, but they cannot raise the low body over a depression or turn this platform into an all-terrain mower.

Satellite reception is equally important. The powered dock needs level ground, and the separate GNSS antenna needs a useful view of the sky. Dense canopy, two tall buildings with a narrow strip between them, a deep roof overhang or a carport can undermine mapping and positioning on either model. Camera assistance can bridge some weak-signal patches; it cannot make an unsuitable RTK property dependable. The distinction between this system and LiDAR is covered in our guide to RTK, LiDAR and camera-guided robot mowers.

Setup is therefore the same patient exercise with both machines. Place the dock and antenna provisionally, let the app assess reception, map the boundaries, and watch several complete cycles before fixing cables or mounts permanently. Clear transitions can use assisted mapping, while curbs, ponds, fences, beds and narrow passages deserve careful manual steering. Save substantial map changes as you go because editing remains clumsy and software behavior is the least predictable part of this otherwise simple hardware.

The cut will not choose a winner

Both machines produce their best result through repetition. Three small blades shave the tips, the mower records its progress, and later cycles approach missed blades from another direction. Neither deck generates the suction of a conventional mower, so long grass can fold beneath the body and leaves below blade height remain largely untouched. Tiny clippings disappear into frequently maintained turf; a heavy first cut leaves evidence behind.

Ride-on boundaries can bring the cutting disc close where grass meets level paving because the chassis is allowed to straddle the edge. A wall, fence, tree trunk, raised bed or deliberately conservative curb boundary still leaves a visible strip. Keep the string trimmer. Buying the larger model does not move the blade disc outward by a single millimetre.

Obstacle vision also deserves the same restraint on both. Large toys, pots, trees and obvious furniture are its comfortable assignments. Hoses, low sprinkler heads, thin flags, branches, pet waste and visually confusing patches of dirt should be removed or excluded. Most importantly, virtual accuracy is not physical containment. Leave a generous buffer beside traffic, water, retaining walls and drops instead of trusting either mower to make a zero-margin turn forever.

Segway Navimow i110N

Segway Navimow i105N Robot Lawn

Choose by lawn shape first, then by lawn size

The i105N is not the worse cutter; it is the same idea on a shorter clock. Unless the lawn is plainly small enough to make that clock irrelevant, buy the i110N and keep the extra hour.